The official list
All Twitch badges, straight from Twitch
Every global chat badge set Twitch publishes, refreshed by the House tracker every 8 hours. Badges on the House roster link to their full page with dates, steps and a live countdown.
Titles, descriptions and art come from Twitch's official global badge list. Twitch doesn't publish dates or how-to steps there; those come only from the House tracker, on each roster badge's page.